The correct answer to this question is this one: they lacked oxygen. The earliest organisms were completely heterotrophic in nature because of the reason that they lacked oxygen. <span>A heterotroph is an organism that cannot fix carbon and uses organic carbon for growth. </span>
D. <span>The stomata will close until enough water is lost.</span>
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The genotype of the Q gene is homozygous dominant because it has 2 dominant genes and when a genotypes has two of the same type of genes it is homozygous. If it has different genes it is heterozygous.
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Answer:
3) Condensación del agua en la naturaleza
El vapor de agua sólo se condensará en otra superficie cuando ésta sea más fría que la temperatura del vapor de agua, o cuando el equilibrio de vapor de agua en el aire, es decir, la humedad de saturación, se haya excedido.
Explanation:
